Machine



13 sheets-#sheen 2.

(No Model.)

A G. SEBOLD.

MGLDING MACHINE.

' Patented sept. 4, 188s.

(No Model.)V i 13 Sheets-Sheet 3.

. G. SE1-30111),A

MOLDING MACHINE. No. 284,494. f `latented Sapt. 4, 1883.

N. PETER& Muliihognpnn Washington. l)V C.

ISSheGtS-Sheet 5.

(No Model.)

G. SEBOLD.

MoLDING MACHINE.

No. 284,494. g Patented sept.4,1883.

u. Firma hmm-mmm. wningwn. o. c.

(No Modem, 18 sheets-#sneer 8.

8.8880181). MOLDING MACHINE.

No. 284,494. Patented sept, 4i 1888.

(No Model.)

G. SBBOLD. MOLDING MACHINE.

13 Sheets-Sheet 7.

Patented-Sept. 4'!A 1883.

u, percus mumummr. wmingn". D. c.

(No Model.) 13 sheetssheen 8. G. SEBO-LD.

MOLDING MACHINE. No. 284,494. Patent-ed Sept. .4.. 1883.

(No Model.) 13 sheetssheet 9.

G. SEBOLD. l MOLDING MACHINE.

N. PETERS. Pmm-Lnnngmpmr, vlamingen. .C.

13 Sheevts-Sheet 10.,

(No Model.)

G. SBBOLD. .MOLDING MACHINE.

Patented sept. 4, 188s.

linnn:

lll

;/////// //////////////////l/llll//ll Y N. PETERS. PhoLHMgrlplllr, Walhngtun, D. C.

UNITED y. STATES PATENT @EEiCEf GEORG sEBoLD, 0E oAELsEUHE, GERMANY.

M'OLDlNe-MACHINE.

SPECFICATIGN forming p art of Letters Patent No. 284,494, dated September 4, 1883.

` Application filed May 25, 1882. (No model.) Patented in Belgium February 2l, 1852, No. 57.130,- iu England February 2l, 1882,

No. 855; in Germany February 23,1882; in France February 25, M82, No. 147,567; in AustriaHungary April 19, 1882, No. 14,580 and No. 6,3m, and iu Italy June 30, 1882, XXVIII, 293, and XVI), 14,067.

T0 all zu/bom, it nir/ay concern:

Be it known that I, GEORG SEBOLD, a resident of Oarlsruhe, Germany, and a subject of the Emperor of Germany, have invented cerual labor in the pressing of the sand in the mold and in the manipulation and fitting t0.- gether of the part-sof the mold or iiasks is dispensed with, as far as possible, and the workldone by machinery. y

My invention consists oi' improvements in the eonstructionof such machinery,l as more fully described hereinafterl In the accompanying drawings, Figure 1 is a side view, partly in section, ofthe complete molding-machine, but without the flask-fitting device. Fig. 2 is a plan view ofthe same, also partly in section, one end of the apparatus in this View beingfshown as cut off and placed, for want of space, below Vthe view of the main portion. line 1 2, Fig. 1, ofthe mold-press, drawn to a larger scale. Fig. fi is a plan view j of the traveling carriage, with its reversible bed,l

drawn to astill larger scale.:` Fig. 5 is a detached side view, partly in section, ofthe indicator; Fig. 6, an end View ofthe same; Figs. 7 and 8, views of a modifcatiom'Figs. 9, 10, 11, and 12, detached views or diagrams of the Adevices for retaining the reversible bed of the traveling carriage in position; Figs.`13 and 14,` side view and sectional plan, respeotively, of the safety locking attachment for the press. Fig. 15 is a vertical section of the device for receiving the iiask when detached `from the bed ofthe traveling carriage; Fig. 16, a sectional'view on the line 3 4, Fig. 15;

Fig. `17, a sectional view of a modification. Fig. 18 is a vertical section of theapparatus for Fig; 3 is avertical section on the` `fitting together the two parts of the pressed mold or iiasln Fig..19 is a plan View of the' same, partly in section, drawn to a"1arger scale, and with the mold-box or iiask removed, and Fig. 2() is an enlarged section on the line 5 6,.Fig. 18, with the two parts of theflask removed. y,

The molding apparatus consists, principally,

asshown in Figs. 1 and 2, of a press, A,

mounted on `standards .on a suitable foundation, rails or tracks B B, mounted on the same foundation, and extending through the pressy frame to some distance on each` side thereof, two traveling carriages C, C, (one for carrying each' half of the mold,) mounted to travel on said tracks, and a device, D lD, at each end of thetracks for receivingv the halfzmold l froin-itstraveling carriage G, (CC) In addition, thereis mounted on suitable transverse ways at the side of the tracks, above the level of themold-box as it rests on the carriage, a

sand-supply box or hopper, F, (F,) for each mold, about midway between the central press, A, and the receiver D (D) at the correspond.-`

ing end of the tracks.

In Fig. 1 the track at the left-hand side `of the press is shown as `broken away, and that end of the track with the carriage C and re ceiver D brought close to the press; but this is only for the purpose of bringing the illustration vwithin the compass of the drawingsheet.

In the plan view, Fig. 2, the proper relation of the receiver D (shown in section) to the central press is correctly illustrated, and the carriage C is shown as being `without any mold-,box and opposite the sand-hopper F, while the carriage C is illustratedas provided with its mold-box and its patterns, ready to receive sand from the hopper FQ and the receiving-table D is, for want` of space on the drawing-sheet, shown cut off and in Ianother position.

The principal steps inthe operation of this apparatus are as follows: After the half-mold boxes have been secured, with their patterns, to the beds of their carriages C C', `nemolding-sand is sprinkled over the patterns, and` then the boxesare filled with ordinary mold? IOO frames have been put on the tops of the boxes. Then one of the carriages-say G-is run be neath the platen of the press A, when a pressblock is placed on the top of the sand, and the latter is then properly pressed into the moldbox by the press, and when the platen is raised again this carriage C, with its pressed mold, is run out from beneath the press to a position over the receiving-table D. Then while this is being done, and the press-frame and block are being removed, and the bed of the carriage C is being reversed, and the pressed mold deout to a position over its receiving-table D.

and the bed of the carriage reversed to deposit the box on the table D, rwhich is elevated for the purpose, as was. also the table D. Then the two tables-D D, with the boxes thereon,

are lowered out of the way of the carriages, and the beds of the latter are reversed to receive new boxes and patterns, Fig. 2. Vhen j the patterns have been withdrawn from the pressed'half-molds, the.latter are transferred tothe fitting device, which, as we have seen, is separately illustrated in Figs. 18, 19, and 20.

Having thus described the main features of the machine and the principal steps in its use, I will now proceed to describe in detail the several parts separately in the following order: the sand-hoppers F F, the press A, the traveling carriage C, (or C,) the receiving-table D, (or D,) and the fitting device.

The sandhoppen-The sand hoppers or boxes F F are mounted on wheels adapted to. travel on rail-brackets f f, Figs. 1 and 3, so that these hoppers may be moved toward or from the mold-boxes on the carriages C C when the latter are brought opposite them to receive the sand, as indicated at the right-hand side of Fig. 1. These brackets f f may be arranged at any suitable height, the two pairs of brackets being shown at different heights `in Fig. 1. The front of each hopper adjacent to the mold-boxes is open, and the sides at this front edge are provided with hinged wings f 5o f', Figs. 1, 2, and 3, so that the width of the opening for the delivery of the sand may be adjusted to correspond/with the size of the mold-box. yThe wings f are secured, after adjustment, by means of screws and thumb-nuts f 2, in connection with slotted lugs on the wings, or by means of any other suitable device.

The presa-The frameof the press A,which is a screw-press, consists of four standards, A A', connected together at the top'by a crosshea/d, A2, secured by nuts a, Fig. 3, and bolted rmly at the lower end to the foundation B, which carries the rails or tracks B, Figs. 1 and 3. The press-table'B2,which supports the bed of the movable carriage and the mold, and consequently receives the pressure during the' i pressing of the sand in the mold-box, is mountf ed on, but readilylifted off, vertically-adjust-y able brackets b, bolted to the inner faces of the foundation-frame B, as shown in Figs. 1 and 3. The center of the cross-headA2 is provided with a bearing for the screw-nut e, which is adapted to turn freely in said bearing, and is screw-threaded for the reception of the threaded spindle E, carrying the platen E', as shown in`Fig. 3. From the platen projects an arm or arms, e,embracing one or more of the standards A, so as to guide the platen in its vertical movements and prevent it from turn-l ing. Thus, by imparting a rotary motion to the nut e in one direction or the other, the platen E will be raised or lowered. To the under side of this nut e is bolted the hub of a horizontal bevel-wheel, E2, intowhich gears a bevel-pinion, g, having its axis mounted in bearings in a cross-piece, g', clamped to two of the standards A A', Figs. 1 and 2, and to this axis is also keyed a hand-wheel, G, by which motion may be imparted to the wheel E2, to raise or lower the platen, as will be readily understood. In connection with the platen E', I make use of a press-block, E, of a' size to just lit within the press-frame or rectangular ring h, fitted on the top of the flask or halfmold'H, which is provided on the other face with the usual cover-plate, h, Figs. 1 and 3, the cover-plate and the iiask being secured by bolts and keys or other suitable means to the bed I of the carriage C, (or U.) Supposing this carriage to have been brought, with its mold filled with sand, immediatelybelow the platen IOO E, and the bed I to be resting on the presstable B2, and the block E3 to have been put in place. power is applied to the wheel G to turn the nut e, and so depress the spindle and platen to compress the sand in the iiask H. Then the platen is raised, the block E3 removed, and the bed I raised clear of the table,ashere inaft-er described, and the carriage, with the pressed mold, moved away. The press can be adjusted for different sizes of molds by raising the cross-head A2 and the parts carried by it by means ofthe nuts a; or, where only a slight change is required, it may be obtained by changing the height of the press-table B2 by a slight vertical' adjustment of the supportingbrackets b. I prefer to combine with the press an indicator to show the extent to which the platen should be depressed after the proper degree of pressure has been ascertained on the rst of a' series of molds. For this purpose I mount on a bracket, j', secured to the crosshead A2, a pivoted pointer, J carrying asegmental rack, j, gearing into the threads of the spindle E, Figs. 3, 5, and 6. Adjacent to the outer end of the pointer is a segment, j2, also carried by the cross-head A2, and carrying adjustable markers js, to indicate the desired extent o`f movement of the threaded spindle E and platen E through the corresponding extent of movement imparted by the spindle to the pointer J. Instead of lthe form of indi- IIO cator described, that shown in Figs. 7 and 8` with the pointer J, the latterbeing geared to the axis ofthe wheel G through the medium of the rack 7, pinion 8, and spur and pinion 9 10.A

The traveZZng'carriageaAs the carriages G- and C are precisely alike, a description of one will suiiice for both. As shown in Figs. 1, 3, and`4, each carriage is composed of `an open A iron frame mounted on grooved `or flanged wheels c c, adapted to travel on the rails `B B. Within this open frame is a bed-plate, I, having at opposite ends central journals, i,\Fig.

4, adaptedto bearings Z', which are guided in V-shaped guidesin the open frame. AA number of holes 'are preferably formed in this bedplate I, for lightness, and itis ribbed on the f be turned in the bearings when released from medium of the shaft k2 and bevel-wheels 13 14 and 15 16. `The cam portions of these` tappets K and K are adapted to come into contact with projections Za k, which are bolted to the four corners ofthe reversible bed I, so as to permit of a limited adjustment on the latter, as indicated `in Fig. 12. These tappets K K are secured in positions to come into contact with the projections k andsupport the reversible table in a perfectly horizontal position by means of a cam, Lacting on an arm, Ict, secured to the end of the shaft la', Figs. 4, 9, 10, and 11. This cam L has a pivotimounted in bearings in the frame of the carriage, Fig. 9, and is provided with a handle, Z, by which it may be manipulated, and with a retainingfinger, Z, having an anti-friction roller to catch under the end of the arm` 7a4, Fig. 11, to'retain the tappets K K clear of the projections Zt on the reversible bed I. When this cam L is turned to the position shown in Figs.9 and 10,the tappets i K K are 4clear of the bed I, and the latter is free to bel turned on itspivots Z; but when the cam L is turned .by its handle Z to the position shown in Fig. 11 the tappets K K are all brought into contact with the projections 7c on the bedy I, and maintain the latter in its horizontal position. When the cam L is turned from the position shown in Fig. 11 to that shown in Fig. 1(),the weight of the carriage on the tappets throws the cam portions of the tappets downward and the arm k*`11p\vard, andthe retaining-finger Z', catchingunder the end of this arm 7a4, raises it farther and carries the tappets clear of the bed I. The tappets K Klare adjustable to a limited extent aroundttheir shafts 7c1 ki, being secured by bolts h5, Fig. 12, passing through slots in the tappets, andthis, with theregulatio'n of the projections Zr, permitstheadjustment of thel parts relatively to each other and to compensate for wear. Instead of using the movable tappets K K to support the bed I in a horizontal position, other deviees-such as sliding bars or bolts--may be used, as will be readily understood. When the lled mold on the carriage-bed is to receive the pressure of the platen in the press A, it is necessary that the tappets K K should be free fromthe load,

and therefore when the carriage is run under the platen E of the press the -cam L must be turned to the position shown in Fig. 10, tofree the tappets from the bed and allow the latter torest wholly on the press-table B2, as shown in Fig. 3, the vertical play of the bearings t" in the frame of the carriage permitting the vertical movement of the bed I for this pu'rpose, and also for the raising of the bed clear of the press-table by the tappets K K when the cam L is returned to the position shown in Fig. 11. In order to insure this withdrawal of the tappets K Kclear of the bed before the platen E is depressed onto the mold on the carriage below, I provide a safety locking device (shown in Figs. 13 and 14)` in connecstandards A is secured Van arm, 17, Fig. 18, having pivoted to Vitthe two-armed level' 18, the long arm of which is hooked at its outer end, and adapted to take into notches or between projections y", formed on the inner face of the `hand-wheel G. The short arm of this lever 18 carries a pin, 19, passing through a slot in one of the arms of a lever, 20, pivoted on the standard A', the said pin 19 also being acted on. by a coiled spring, 22, tonormall keep the hooked end of the lever 18 clear of the projections g2. The lever 20 has an arm, 21, which projects in the path of the handle Z of the cam L on the carriage C when. the 'said cam is in the position shown in Fig. 11, with the tappets K K supporting the bed I.` Hence when the carriage Q is run under the press A, as indicated by the arrow, Fig. `14, with the tappets supporting the bed I, the handle TZ will strike the arm 2 1 of the lever and move it against the action of the spring 22 to the position indicated `by dotted lines in Fig. 14, and the hooked end `of the lever 18 will inter'- lock with the` projections g2 and prevent the wheel G from being turned until the handle Z is turned up to the position shown in Fig. 10, to clear 'the tappets K K `from the bed I and allowthe latter to drop onto the press-table BL to receive the pressure of the platen.

.The receiving! tables-Then the sand has been properly compressed in the mold'or flask by the pressure of the platen, and the carriage with its load withdrawn from the press A, it is traversed on the tracks B to a position over the receiving-table D, (or D,) and the carriage is retained there by means of a pivoted latch, 23, catching over a projection or rod, 24, on the end of the tracks, as shown at the leftl of 5 `tion with the hand-wheel G. To one of the IIO . the screw N is secured a pinion, n', into which bearings secured to the frame M. Instead of carriage C, having its bed turned up again, is

proper, with a central circular opening closed.

4lower end of the bolt is threaded for the recepwedge, 29, Fig. 17, at the end of a rod, 30,

Fig. 1. The tappets K K' of the carriage C are then released, as hereinabove described, and the bed I, with its pressed mold secured thereto, is reversed, so that on releasing the securing devices the mold may be deposited on vthe receiving-table D. This table D, as shown in Fig. 15, is mounted on a universal or ballland-socket joint, as hereinafter set forth, and is carried by an open frame, M, which is vertically adjustable within an outer fixed frame, M', bolted to the bed B', carrying the tracks B, and also to a foundationin a pit below the level of the bed B. The frame M is movable vertically through `the medium of a screw, N, mounted in a bearing, n, in the foundation, and having itsthreaded portion passing through a threaded cross-head, m, carrying the frame M, as shown in Fig. 15. To

gears a spur-wheel, n2, on a vertical shaft, N', adapted to bearings in the foundation, and also to bearings on the frame B', and provided with an operating-handle,Fig. 1 at a convenient height, Thus by turning thishandle the frame M and its table Dimaybe raised or lowered. The receivingtable D consists ofthe table d by a fiat plate, d', and having acentral annular cup-shaped flange, d', adapted to be clamped between two similarly cup-shaped plates, d2 d3, by means of a screw-bolt, 25. The upper end of this bolt has a nut adapted to a recess in the plate d3, and is prevented from turning by having an angular portion passing through a corresponding opening in the plate da.' The tion of a threaded gear-wheel, 26, by turning which the clamping-plates may be tightened or freed to secure or adjust the table d to the desired level. This wheel 26 maybe turned' by means of a bevel-pinion, 27, Fig. 1G', on the end of a handled shaft, 28, adapted to clamping these plates d2 d3 together through the medium of the gear-wheel and pinion, a

andmoved in or out by means of a handled nut, 31, adapted to the threaded end of the rod', may be used, aswill be readily understood. Other ,forms of universal joint for the table D may be used without departing from my invention. lVhen the carriage C has been broughtimmediately over the receiving-table D, and the bed of the carriage with its pressed mold reversed, .as shown in Fig'. 1, the frame M,carrying the table D,is raised by the screw N until it supports the mold, the clampingplates d2 d3 being sufficiently free to permit the table proper, d, to accommodate itself to the level of the mold. Then the clamps d' d are tightened and the devices which secure the iiask to the bed I of the carriage released, so that the table D,with the mold deposited there' on, can then be lowered by the screw N until the outer edges of the plate d2 of the table rest on the top of the xed frame M. The` the frame M', and passing through vertical Y slots in the said brackets. These brackets ml are adjusted to a position with their tops above the top of the frame M', as indicated by dotted lines, so that the table D can rest on these brackets, should the height of the small flask not require the further lowering of the table D; l

Wold-fitting apparatua-The apparatus for accurately fitting together the two parts of the mold which have been prepared by the machinery above described is illustrated inFigs. 18, 19, and 20. cured to a suitable foundation, preferably bclow the level of the ground, and to the upper end of this frame is secureda horizontal table, f

O, on which is placed one part, W, of the mold. Vithin the.fixed frame P is a verti- P is an open fixed frame, sc-4 cally-guided frame, Q, which can be raised and loweredby means of a screw-shaft, B, hav

set forth, the two vertical guide-rods S, and

the two vertical standards T T, the latter being provided with cross-pieces t at their upper ends, on which the second half, W', of the mold may rest, as shown in Fig. 18. The guiderods S are provided at their upper ends with detachable guide-sockets s, of a size to fit the holes in the flanges of the half V' of the mold, and when the half W of the mold is to be placed on its table O, these socket-heads are removed and the perforated iianges of this flask W passed over the rods S, Vwhich thus accurately determine its position on the table O. Sockets s of the proper size are then placed onthe tops of these rods, and the flask W' is placed on the supports T, with the perforated flanges of the flask fitting the sockets s, as indicated in Fig. 18. By this means Ythe relative positions of the two halves of the molds in vertical lines are accurately determined, and it only remains to lower the frame Q, table Q', standards T, guide-rods S, and the flask WV' to accurately fit the two parts of the mold together without danger of injuring the core. When the screw It has been turnedV until the upper flask, W', -has descended onto the lower one, IV, the depression of the table Q' is continued ,until the guide-rods S have been entirely withdrawn from the liianges of the flasks, when the latter can be secured together by the usual IOO IIO

lasrlgaazi 5 means. The completed mold can then be removed ready for the casting operation, and the iitting apparatus prepared forthe next pair of ilasks In order to adapt this tting apparatus for luse `on different sizes of flasks, the guide-rods S and standards T are secured to the movable table Q', so as to be adjustable horizontally toward or from each other. For this purpose the rod S and standard at each `end are secured to a plate, U, guided on the` table Q', so as to `permit of a limited horizontal motion thereon. The inner ends of these two plates U carry nuts u, Figs. 18 and 19, incapable of motion independently of the plates-and to these nuts are adapted the threads of the right and left handedscrew-shaft V. This screw-shaft is adapted to iixed bearings in the table Q', and has a squared end, o, for the reception of a winch-handle or wrench, to turn it when itis desired to adjust the guide-rods S and standards Ttoward or from each-other for different sizes of molding-flasks.

I claimas my inventionl. The combination of the press-frame, a

press-table, and the platen with a screw carrying the platen, a nut, e, having a bearing in the frame, gear-wheel E2, secured to the nut, hand-wheel G, and pinion gearing into the said wheel E2, substantially as set forth'. 2. The combination of the frame and movable platen of a press with a screw-spindle carrying the platen, toothed segment gearing into the spindle 4and carrying an index-ringer, substantially asset forth.

3. The combination of the base-frame and standards of a press with an adjustable cross-` head carrying the platen, operatingwheel E, hand-wheel G, and pinion, and adjustable cross-piece carrying the latter.

4. The mold-carriage consisting of an open frame mounted on wheels, and a reversible bed mounted in bearingsin said frame, and` to which the iiask may be secured, and devices,.substantally as set forth, for supporting thebed at its four corners when it is to be maintainedhorizontally. j

5; The mold-carriage consisting of an open frame mounted on wheels, a .reversible bed mounted in bearings in the frame, shafts carrying tappets adapted to engage with the bed and geared to each other, substantially as specified.

6. The combination ofthe frame of the moldcarriage and a reversible bed mounted in bearings in the frame with a shaft carrying retaining-tappets, and a locking-cam to retain the shaft, substantially as described.

' 7. The combination of the press, having a platen, press-table, and operating-wheel, G, with a traversing carriage having a bed with 'movable supporting and retaining devices and an operating-handle, Z, and with locking mechanism for the wheel, substantially as described, whereby the said wheel G is prevented from turning while the bed is held by its supporting devices.

8. The combination of the platen and operi .with brackets m", adjustable vertically on said `frame M'.

11. The combination of the adjustable supporting-frame and the table proper, having-a curved annular iiange, with correspondinglycurved clamping-plates, substantially as and for: the purpose set-fort 12. An apparatus for fitting together the two parts of a mold, said apparatus consisting of a fixed table carrying one half of the mold, and a movable table carrying standards T T, to support the other half of the mold, 'and guide-rods S.

13. The combination of the xedtable with the movable table carrying supporting-standards T T, and guide-rods S, adjustable toward and from each other on the `said movable table. l

In testimony whereof I' have signed my name to this speciiication in the presence of two roo subscribing witnesses.

GEORG sEBoLD.

Witnesses:

EMIL GERBER, GUsrAv BEER. 

